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Please help me with my smps

Discussion in 'Datasheets, Manuals and Component Identification' started by juh, Mar 6, 2013.

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  1. juh


    Feb 21, 2013
    Input is 100-120 Vac, output is 12V 12.5A

    Can anyone help me determine what are the expected voltage output per stage so I can test it with my voltmeter. Tnx. Attched here is the schematic diagram.

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    I think L1 and L2 are drawn incorrectly.
  3. duke37


    Jan 9, 2011
    The mind boggles.

    Why have transformers with the windings shorted?
    What is the circuit to the left of the big capacitors supposed to do?
    What is the chip, I cannot read the number?
    Where did this complex circuit come from and what is the purpose of each stage?
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